Electronics Forum | Thu Dec 13 08:02:02 EST 2007 | realchunks
You may want to try raising your pre-heater if you have one. I would also suggest trying different fluxes that may be a little more active so you can use less. What type of fluxer are you using? Selective solder flux residue is a gray area. This i
Electronics Forum | Tue Dec 11 12:15:36 EST 2007 | swag
We just got a contract to build a board with 1400+ SMT placements. This thing is 16" x 12" and the PCB thickness is 0.142". Dead center is a 580+ pin BGA that costs about $600. I'm a bit intimidated... I've done lots of mole profiling on BGA's bu
Electronics Forum | Thu Dec 13 08:07:55 EST 2007 | realchunks
Yes, calling meetings seems to be the way to tackle tuff problems without ever doing anything about them. Make spread sheets and "talk" a good talk so everyone thinks you are on top of your game. Yet you do absolutely mothing and wonder why the pro
Electronics Forum | Wed Dec 26 11:01:31 EST 2007 | swag
Thanks, rywman. I do have a solder sample along with dummy BGA's so we should have what we need. This BGA is actually 1152 pins (I didn't have that right in my original post). The bad part is that we are building only one board only and the actua
Electronics Forum | Wed Dec 26 15:45:17 EST 2007 | ck_the_flip
Amen to that!! Too many people lately trying to "get out" of rolling their GD sleeves, attaching thermocouples to the board (using their own preferred method), and running the board and profiler through the oven. I'm sick of questions like "duh, pb
Electronics Forum | Tue Dec 11 19:48:37 EST 2007 | arun2382
Hi, If I were working with a 75 um thick stencil, Is there a spec. as to what the maximum value allowed on actual solder height measurements? Stencil type: Laser cut and electropolished Solder paste type: Type 4 Sn-Sb Would the measured values va
Electronics Forum | Wed Dec 12 15:00:43 EST 2007 | mefunak
Hi,everybody! There is an interesting things happened with the 0402 components- machine Siemens HF3,it's an Emergency Stop error message " Component not at nozzle before placement" and there is a chance to find an extra components lying in a mess on
Electronics Forum | Thu Dec 13 16:22:15 EST 2007 | mefunak
Thank you,LLOYD,for your response,all your prepositions will be checked. And about switching machine on and off, I absolutely agree with you, it's the perfect cure for Siemens))) But,a strange thing happened,we changed a head,that started to make the
Electronics Forum | Fri Dec 14 18:43:04 EST 2007 | fastek
Considering you will be buying a used one and considering you can probably find one for sale at around $30K-$40K I would argue you CANNOT find a faster machine for less money these days. Amazing actually to realize that you could pick up a CP-6 for
Electronics Forum | Fri Dec 21 04:05:19 EST 2007 | muarty
For the money I don't believe you could pick up a better machine. Especially if you are only planning to use it as a Chip Shooter. Buying 2nd hand I would strongly advise that you have the machine Health Checked prior to purchasing it. The machines a
